a cloudless sky!
Although the Moon just peeked over the warm roof tops at the end of the evening, I couldn't resist myself to make a quick sketch through my Polarex Unitron 75mm f/16 refractor. The seeing was horrible but at a magnification of 92x the image was quite pleasing. Langrenus is big enough (133 km wide) to view even at low power, and yesterday it proved to be a nice target for sketching. The floor of the crater was already pitch black, only the top of the outer rim received some last sunlight before entering a cold, two week night. The little triplet of craters Naonobu, Bilharz and Atwood made the view even more appealing.
I made the sketch with a white pastel pencil on black paper.
(The image is a photograph of the original drawing behing the eyepiece)